Antiangiogenic therapy with recombinant human endostatin may improve blood perfusion of cervical node with necrosis in nasopharyngeal carcinoma patients: a preliminary study by using contrast-enhanced ultrasound - Yang, Zhendong; Xiao, Huimin; Li, Xigui; Wei, Zhuxin; Kang, Min; Wang, Rensheng; Huang, Jianyuan (Frontiers in Oncology, 2025)